70 Dr. A. S. Packard, Jr's Revision of the 



CRABRO, Fabr. 



% . Head sub-triangular, being nearly as long as broad, and balf aa 

 wide bebind as in front. Vertex broad and flat, the ocelli placed in an 

 equilateral triangle in the middle. Eyes not generally reaching to the 

 middle of the vertex, broad oval. The whole front of the head broad 

 as high, narrowing slowly towards the insertion of the mandibles; the 

 front of the epicranium is vertical, its plane being exactly at right 

 angles to the vertex, equilaterally triangular, and the groove is large 

 and not very deeply cut. 9 • Head sub-cuboidal, hardly narrowing be- 

 hind, nearly as long as broad. Ocelli placed a little in advance of the 

 middle of the vertex, the eyes above do not reach the middle, they are 

 broader below than in the % , so that the sides of the front hardly nar- 

 row towards the insertion of the jaws, making the front of the head 

 quadrilateral. Antenna) filiform in both sexes, second joint long as half 

 the breadth of the head, in the % it is somewhat swollen in the middle, 

 more slender in the 9 , the remaining joints are hardly swelled in the 

 middle. Clypeus much raised in the middle, but a third shorter than 

 broad and rounded angularly in front in % ; in 9 very short and 

 broad, being nearly two-thirds shorter than broad. Mandibles in % 

 even width throughout, bidentate, the lower smallest; in 9 the jaws 

 narrow somewhat towards tip. 



Thorax oval, subglobose, flattened above. Meso-scutum nearly 

 square, as long as broad, straight behind, and the sides are straighter, 

 not rounded towards the hind margin as usual ; scutellum is very con- 

 tinuous with the scutum. It presents a lanceolate acute transverse area. 

 The pronotum rounds suddenly vertically downwards. Flanks full and 

 convex, as usual. 



Primaries: pterostigma narrow, indistinct; second costal has the sub- 

 costal and costal recurrent placed in the middle. The first median cell 

 lozenge-shaped, the lower side of the outer half of the space being a 

 little shorter than the upper. The second internal space is long, the 

 outer side being straight and curved a little towards each nervure. 



% . Legs, tibiae smooth, coxae sub-triangular, fore femora swelled, 

 smooth, flattened beneath, the depressed area sometimes terminating in 

 a spine near the middle of the joint. The tibia? are rather short, flat- 

 tened beneath, and terminating in a broad recurved spine. Tarsi flat- 

 tened in all the legs. Fore tarsi, first joint a third longer than the 

 remaining ones, terminating, as do the rest, in a slight spine. The 

 remaining ones are about half as long as broad. Hind femora tapering 

 more than usual towards the extremity. Tibiae smooth, ending in two 



